diff --git a/README b/README
index b3df4ba3a7606f243df94bf78132961a5eb9edd4..20e8c808e2863d1ffc2f09036e8f84fed547e8ea 100644
--- a/README
+++ b/README
@@ -14,7 +14,8 @@ Installation
 See also the Module::Build documentation.
 
 Extra modules required for testing:
- - Test::More
+ - Test::Command
  - Test::Compile
+ - Test::More
  - Test::Pod
- - Test::Command
+ - Test::Synopsis
diff --git a/lib/WWW/Efa/Error/Setup.pm b/lib/WWW/Efa/Error/Setup.pm
index 521bb55875fbd977453e5bfec87927b7ae463ff6..e3de3e3eb831d0f5f4c22dee1fbf376ae2e17510 100644
--- a/lib/WWW/Efa/Error/Setup.pm
+++ b/lib/WWW/Efa/Error/Setup.pm
@@ -1,5 +1,28 @@
 package WWW::Efa::Error::Setup;
 
+=head1 NAME
+
+WWW::Efa::Error::Setup - WWW::Efa error, happened in ->new()
+
+=head1 SYNOPSIS
+
+    use WWW::Efa::Error::Setup;
+
+    my $error = WWW::Efa::Error::Setup->new(
+        'max_interchanges', '-1', 'Must be positive'
+    );
+
+    die $error->as_string();
+    # WWW::Efa setup error: Wrong arg for option max_interchanges: -1
+    # Must be positive
+
+=head1 DESCRIPTION
+
+Class for all WWW::Efa-internal errors occuring during initialization. Usually
+caused by missing or invalid setup arguments.
+
+=cut
+
 use strict;
 use warnings;
 use 5.010;